What Is the Cost of an Illinois Divorce?

 Posted on April 07, 2026 in Finances & Divorce

One of the first questions people ask when they decide to divorce is a simple one: how much is this going to cost? The honest answer is that it depends. If you are considering divorce in 2026, you may have heard figures that range from a few hundred dollars to well over $100,000. Both can be true because the cost of divorce varies widely based on your specific situation. 

Understanding what drives those costs is one of the best things you can do before the process begins. Our St. Charles divorce attorneys offer free consultations so you can get an idea of how we can help you and how much it might cost. Call us at 630-409-8184 today. 

What Factors Affect the Cost of an Illinois Divorce?

No two divorces are exactly alike, and no two price tags are either. Several things will shape what you ultimately spend. 

The Type of Divorce You Choose

The path you take to end your marriage has a major impact on cost. There are a few common options in Illinois:

• A do-it-yourself divorce, where you handle all the paperwork on your own or through an online service, typically costs between $600 and $1,800. This option usually only works for couples with no children, few shared assets, and full agreement on all issues. If you choose this option, you need to do it very carefully and understand that mistakes can be expensive. 

• A mediated divorce involves a neutral third party who helps both spouses reach an agreement outside of court. This tends to cost significantly less than a full courtroom battle, and it gives both spouses more control over the outcome. If you can reach an agreement outside of court, you can file for an uncontested divorce. 

• A litigated divorce, where a judge makes the final decisions on at least one issue, is the most expensive option. A straightforward litigated divorce might cost around $15,000, but cases that go all the way to trial can reach $100,000 or more.

According to some surveys, the average total cost of divorce in the United States is around $7,000, but it’s usually much higher when spouses cannot agree on major issues. Couples who settle everything without going to trial spend far less than those who fight it out in court.

Divorce Attorney Fees and Retainer Costs

If you hire an attorney, their fees will likely make up the largest portion of your overall costs. Illinois divorce attorneys generally charge between $200 and $500 per hour, depending on their experience and the county where they practice. Most attorneys also require a retainer before they begin working on your case. A retainer is an upfront payment, usually somewhere between $3,500 and $10,000, that the attorney draws from as they work on your behalf. If the retainer runs out before the case ends, you will typically be asked to replenish it.

This is one reason why cooperation between spouses matters so much. The fewer hours your attorney has to spend negotiating, filing motions, or preparing for hearings, the lower your final bill will be.

Court Filing Fees in Kane County

Under 750 ILCS 5/401, Illinois law requires certain steps to legally file for the dissolution of a marriage. Part of that process involves paying court filing fees. In Kane County, the initial filing for a divorce ("dissolution of marriage") is between $364 and $454. Additional fees may apply depending on the motions filed throughout the case. These costs are the same whether your divorce is contested or uncontested.

It is worth noting that filing fees are just one piece of the cost picture. Other potential expenses include fees for serving your spouse with legal documents, costs for financial or child custody evaluations, and fees for copying or obtaining records.

How Does Cooperation Between Spouses Affect the Cost of an Illinois Divorce?

One of the single biggest cost factors in any divorce is how well you and your spouse can work together. When both spouses are willing to negotiate and compromise, the process moves faster and costs less. When communication breaks down and every issue becomes a fight, costs rise quickly.

Think about it this way: If dividing your property takes two negotiation sessions instead of six, you are paying for two sessions’ worth of attorney time instead of six. That difference can add up to thousands of dollars. The most expensive divorces tend to be those where spouses disagree on multiple major issues at once, such as:

• Division of marital property, including the family home and retirement accounts

• Allocation of parental responsibilities, sometimes called custody

• Child support and spousal maintenance amounts

• Division of business interests or significant debts

None of this means you should simply give in to avoid a fight. It means that going into the process with a willingness to negotiate in good faith can protect both your family and your finances.

Are There Ways to Lower the Cost of Your Kane County Divorce?

There is no way to guarantee that your divorce will be inexpensive, but there are real steps you can take to keep costs from spiraling out of control.

Consider Mediation

Mediation is one of the most effective ways to reduce divorce costs. A trained mediator helps both spouses discuss and resolve disputes without going to court. Even if you need an attorney to review any final agreements, the overall cost of a mediated divorce is usually much lower than a fully litigated one.

Organize Your Financial Information Early

Your attorney will need a clear picture of your finances. If you gather documents like tax returns, bank statements, retirement account records, and mortgage information before your first meeting, you save time and reduce billable hours. Coming in prepared is one of the simplest ways to lower your overall costs.

Be Clear About Your Priorities

Not every issue is worth fighting over equally. When you know which outcomes matter most to you and which ones you can be flexible on, your attorney can focus their time and energy on what matters. 

Call a Kane County, IL Divorce and Separation Attorney Today

Divorce is one of the most important decisions you will ever make, and there’s no doubt that it can be expensive. Knowing the costs upfront can help you plan wisely. Whether your situation is straightforward or complex, having the right legal support makes a real difference. 

Our St. Charles divorce lawyers at The Law Office of Matthew M. Williams, P.C. are ready to walk you through your options and help you understand what your case may involve. Call 630-409-8184 today to schedule a free consultation and take the first step toward a more secure future.